The fourth named storm of the Atlantic hurricane season formed Monday afternoon.

Tropical Storm Don formed east of the Windward Islands.

The tropical storm is moving west at 17 miles per hour. It has maximum sustained winds of 40 mph and a minimum central pressure of 1009 mb.

As of Monday morning, the National Hurricane Center said that the shower and thunderstorm activity had little organization and appeared to lack a well-defined center. They then sent aircrews to investigate the storm.

After findings from Hurricane Hunters, the disturbance was upgraded to a tropical storm.

Tropical Storm Don is expected to bring heavy rainfall and strong winds to portions of the Lesser Antilles Tuesday.